#include<iostream>
#include<Eigen/Dense>

using namespace std;
using namespace Eigen;

// vector comma - initializer
// vector joined

int main(int argc,char ** argv){

    RowVectorXd v1(3);
    v1 << 1,2,3;
    cout << "v1 = " << v1 << endl;

    RowVectorXd v2(4);
    v2 << 1,4,9,16;
    cout << "v2 = " << v2 << endl;

    RowVectorXd joined(7);
    joined << v1,v2;
    cout << "joined = " << joined << endl;
    return 0;
}
